This is a link to the governments facts on redundancy regarding consultation and notice periods :-
Redundancy: your rights to consultation : Directgov - Employment
In particular I would draw the attention of those that have been affected to this particular bit :-
Failure to consult
You or your rep might be able to make a claim to an Employment Tribunal for a ‘protective award’ if your employer:
- does not begin consultation early enough
- ends the consultation early
- doesn’t consult properly
An Employment Tribunal could make a ‘protective award’ of up to 90 days' pay for each affected employee. The amount will be decided by the Employment Tribunal, based on the extent of your employer’s failure and the circumstances.
Unless Viking have actually gone bust I fail to see how they can get away with giving their staff a zero notice period in the UK ??